app-shell: Introduce a ShellRendererMainDelegate.

apps/shell/renderer/shell_content_renderer_client.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef APPS_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_
 #define APPS_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/content_renderer_client.h"
 
 namespace extensions {
 class Dispatcher;
 class DispatcherDelegate;
 }
 
 namespace apps {
 
 class ShellExtensionsClient;
 class ShellExtensionsRendererClient;
+class ShellRendererMainDelegate;
 
 // Renderer initialization and runtime support for app_shell.
 class ShellContentRendererClient : public content::ContentRendererClient {
  public:
-  ShellContentRendererClient();
+  explicit ShellContentRendererClient(ShellRendererMainDelegate* delegate);
   virtual ~ShellContentRendererClient();
 
   // content::ContentRendererClient implementation:
   virtual void RenderThreadStarted() OVERRIDE;
   virtual void RenderFrameCreated(content::RenderFrame* render_frame) OVERRIDE;
   virtual void RenderViewCreated(content::RenderView* render_view) OVERRIDE;
   virtual bool WillSendRequest(blink::WebFrame* frame,
                                content::PageTransition transition_type,
                                const GURL& url,
                                const GURL& first_party_for_cookies,
                                GURL* new_url) OVERRIDE;
   virtual void DidCreateScriptContext(blink::WebFrame* frame,
                                       v8::Handle<v8::Context> context,
                                       int extension_group,
                                       int world_id) OVERRIDE;
   virtual bool ShouldEnableSiteIsolationPolicy() const OVERRIDE;
 
  private:
+  ShellRendererMainDelegate* delegate_;
   scoped_ptr<ShellExtensionsClient> extensions_client_;
   scoped_ptr<ShellExtensionsRendererClient> extensions_renderer_client_;
   scoped_ptr<extensions::DispatcherDelegate> extension_dispatcher_delegate_;
   scoped_ptr<extensions::Dispatcher> extension_dispatcher_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellContentRendererClient);
 };
 
 }  // namespace apps
 
 #endif  // APPS_SHELL_RENDERER_SHELL_CONTENT_RENDERER_CLIENT_H_